Equilateral Acrylic Prism, 50mm Length, 50mm Faces Material_ABS Plastic Regulated dual-output power supply showing

Regulated dual-output power supply showing independent LED readouts of voltage and current

formed to measure atmospheric pressure through mercury or indicator-fluid column rise

the precision standard for Kelvin-bridge work

Spare pack of ten low-mass pith balls sized for the standard pith-ball electroscope

for rotational-energy and moment-of-inertia experiments

Equilateral Acrylic Prism, 50mm Length, 50mm Faces Material_ABS Plastic Regulated dual-output power supply showingPairs 50mm length and 50mm faces on a polished acrylic equilateral prism with 60 degree angles, the wider face area handling broader incident beams for refraction and wavelength experiments.